Method of knitting reinforced goods.



F. CECKA.

MtTHOD 0F KNITTING REINFORCED GOODS.

APPLICATION FILED OCT. 16. 1915.

Patented July 3, 1917.

2 SHEETS-SHEET I.

F. CECKA.

METHOD OF KNITTING REINFORCED GOODS.

APPLICATION FILED OCT. I6. I915- Patented July 3, 1917.

2 SHEETS-SHEET 2- lid till

FRANZ CEGKA, F CHEMNITZ, GERMANY, ASSIGNOR TO THE FIRM OF SQHUBEBT, & SALZER MASUHINENFABRIK, AKTIENGESELLSCHAFT, OF CHEMNITZ, GERMANY.

METHOD OF KNITETING REINFORCED GOODS.

1232,2113, original application filed July a2, 1914,

To all whom it may concern:

Be it known that l, Fnerrz Gncnma citizen of the German Empire, residing at Chemnitz, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Methods of Knitting Reinforced Goods; and I do hereby declare the following to be a full, clear, scription of. the invention, such as will on able others sln'lled in the art to which it appertains to make and use the same, which is a division of my application Serial No. 852,416, filed July 22, 1914.

M invention relates to improvements in rein orced knitted goods and a. method of makin same.

In e manufacture of knitted goods it is usual to loosen the loops when making reinforced parts, in order to imparti'suficient elasticity to the reinforced parts. If the reinforced parts were made with the same close loops as the parts which are not reinforced, the goods would be close and unclasticin the reinforced parts.

In order to loosen the loops the knitting depth of the frame is increased by roofing the needle bar so as to produce loops of increased length, for which purpose the known loosening and closing cam is set at the be 'nning of the operation so as to produce fdr a definite part of the aggregate stroke of the thread guide a diflerent knittin depth. y

he object of the improvements is to provide a method of knitting reinforced goods by means of which fashioned reinforced parts canbe produced, '3. (2., reinforced parts which are of varying breadth. With this object in view my invention consists in the matters to be described hereinafter and particularly pointed out in the appended claim, reference being had to the accompanying drawings and to the letters of reference marked thereon.

In the drawings Figure 1 is a diagrammatical view showing a mlitting apparatus of known construction 2 and 3 are diagraatical views Specification of Letters Patent.

and exact 'deshowing respectively reinforced heel and toe portions of a knitted stocking prior to uniting the sides of the same, thereinforced portions having the forms now inuse,

Figs. 4c and 5 are similar views showing goods in which the reinforced portions are made according to my improved method,

Fig. 6 is a view of a mechanism suitable for making reinforced goods according to my improved'method, and

' Figs. 7 and 8 are cross-sections taken respectively on thelines AB and GD of Fig. 6.

, The same letters of reference have been used in all the views to indicate correspondin parts.

eferring to Figs. 2 and 3, in the manufacture of the cross-hatched parts F of the heel and S of the toe the length of the loops is increased over the whole breadth of the head of the frame. However, if it is desired to make a reinforced ankle H, as is shown in Fig. 2, or a double sole D, as is shown in Fig. 3, a part only of the breadth a1b and 0/-b' of the blank is reinforced,

'5. 6., the portions ac and d-h and w'-o and 0Z'--b', while the portions o-d and 00Z are not reinforced. The machine employed in making the above-described knitted goods is of the straight knitting machine type. Mechanism for operating the needle bars N and the relation of the parts and their proper cooperation is shown and described in my United States Patent Number 1,213,333, dated January 23, 1917, of which he presentapplication is a division. In such cases the knitting depth is temporarily varied by pressing the needle bar N from the position I into the position If, so as to increase the length of the loops. This is done b means of cards 8 and 10 mounted on a sha 1. As the distance 2 of the said cams 12 is constant, the border lines 1--2 and 12' of such reinforced portions are straight, as is shown in Figs. 2 and 3. The breadth 0-(Z and 0 -02 between the reinforced portions can be set before the operation, but it can not be chaned in the course of the manufacture of to goods:,

Patented July a, tort, v

Serial No. 352,4l16. Divided and this application filed October 13,

1915. Serial Ito. 56,246;

Eli

The border lines of the reinforced parts are always made by the same needles of the head of the frame.

By means of apparatus of this class such reinforced goods can not be made which are provided with fashioned reinforced portions, such as are shown for example in Figs. 4 and 5, where not only the breadth, but also the inner border lines of the reinforced portions are changed and made by different needles.

Therefore the apparatus can be used only in such cases in which a reinforced portion is to be producedwhich beginsin definite rows'of loops and which is not changed in the course of the operation. But where fashioned reinforced portions are to be made in which the breadth is increased or reduced in the course of the manufacture the apparatus can not be used.

In order to obtain a variation of the knitting depth which corresponds to the desired form of the reinforced portions the cams of the loosening and straightening cam are so mounted relatively to each other that their relative position can automatically be changed while the machine is in operation,

so that the effect of the cams and the-setting of the needle bar caused thereby and the variation of the knitting depth can be performed in the successive rows of loops at different points.

Thereby ll am enabled to produce reinforced portions which are gradually increased or reduced, such as is shown byway of example in Figs. 4 and 5. The cams are set in a suitable way by means of a jacquard card or a counting mechanism according to the desired form of the reinforced parts.

Thereby I am also enabled to produce reinforced portions of uniform breadths in narrowed or widened goods.-

ln order that my invention may be more clearly understood mechanismffor putting the same into ed'ect has been shown by way of example in Figs; 6 to 8. As shown in.

the said figures, a shaft 1 carries a disk 2 the hub 3 of which provides a loose support for disks 4 and 5 which are held in position by means of a washer 6. The disk 4 is provided with rack teeth 7 and it is made integral with a cam 8, and thedisk 5 is formed with rack teeth 9 and is provided with a cam 10. lln bores made in the disk 2 two of the disk 2 a gear wheel Mandi a ratchet wheel 15 are secured to the shaft 11.

To the shaft 12 a gear wheel 16 and at the opposite side of the disk 2 a' gear wheel 17 and a ratchet wheel 18 are secured. The

gear wheels 14 and 17 are in mesh with'each other,

aeeaaie ratchet wheel 15.

On a second pivot bolt 23 a similar arm 24 has a rocking support which is acted upon by a spring 25, and which carries a pawl 26 engaging in the teeth of the ratchet wheel 18. On a pivot bolt 27 secured to a fixed part of the frame work two shift levers 28 and 29 are mounted which are normally held away from the disk 2 by springs 30 and 31 respectively. The lever 28 is in the path of the arm 20 and the lever 29 in the path of the arm 24:.

On a pivot bolt 32 a bell crank lever 33 is mounted which acts on the lever 28, and on a pivot bolt 34 a bell crank lever 35 is mounted which acts on the lever 29. To the free ends of the said levers links 36 and 36' are jointed.

The operation of the mechanism is as follows: The links 36 and 36' are controlled by suitable means such for example as a jacquard card or another counting mechanism. Forexample, if the link 36 has been drawn to the right as is shown in Fig. 6, the bell crank lever 33 connected therewith forces the shift'lev'er 28 forward and in opposition to the spring 30 and into position for engagement with the arm 20. If now the shaft 1 and the disk 2 are rotated the arm 20 gets in engagement with the shift lever 28 and it is pushed downward thereby, so that the pawl 22 mounted thereon op crates the ratchet wheel 15. Thereby the gear wheel 13 as well as the gear wheel 14= are rotated, and the gear wheel 13 which is in mesh with the rack teeth 7 of the disk 4: moves the cam 8 away from the cam 10. As the gear wheel 14 is in mesh with the gear wheel 17 also the gear wheel 16 is retated which is in mesh with the teeth 9 of the disk 5 carrying the cam 10, so that the said cam is moved in a direction opposite to that of the cam 8. Therefore the increase of the distance of the cams'8 and 10 corresponds to the double shifting movement imparted by'the pawl 22 to the ratchet wheel.

Whenever the bell crank lever 33 forces the shift lever 28 forward upon each rotation of the shaft 1 the distance of the cams 8 and 10 is increased, so that in the blank being knitted the breadth of the portion which is not being reinforced is enlarged, because the movement of the needle bar causing the increase in the knitting depth ceases at an earlier moment and begins later. If on the other hand it is desired to reduce the portion which is not to be reinforced, the bell crank lever 35 must be moved'bythe counting mechanism. Thereby the shift lever 29 located in the path of t eatre the arm 24 is rocked forward, so that upon rotation of the shaft 1 and the disk 2 the arm 24 is rocked and the pawl 26 mounted thereon acts on the ratchet wheel 18, which carries along the gear wheels 16 and 17. The gear wheel 16 engages in the teeth of the rack teeth 9 of the disk 5 and shifts the cam 10 mounted on said disk toward the cam 8. Simultaneously the gear wheel 17 rotates the gear wheels 14 and 13 and through the latter the disk 4: and the cam 8 mounted thereon, so that now both cams are shifted relatively to each other a distance corresponding to the double path of the ratchet wheel '18.

By providing a jacquard pattern or counting mechanism of the proper form the beginning and the end of the change of the knitting depth can be carried as is necessary for obtaining the desired form of the reinforced part.

I claim herein as my invention:

"The method of making knitted goods which consists in lmitting a plurality of rows of loops of a fabric partly with close loops and partly with loose loops, and varying the breadth of the close loop portion during the knitting operation to produce loose loop portions fashioned on both sides.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

FRANZ CEC. Witnesses W. H. Morons, M. Rowan. 

